EP2626612B1 - Coupling device with residual pressure relief system - Google Patents
Coupling device with residual pressure relief system Download PDFInfo
- Publication number
- EP2626612B1 EP2626612B1 EP20120290046 EP12290046A EP2626612B1 EP 2626612 B1 EP2626612 B1 EP 2626612B1 EP 20120290046 EP20120290046 EP 20120290046 EP 12290046 A EP12290046 A EP 12290046A EP 2626612 B1 EP2626612 B1 EP 2626612B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling device
- residual pressure
- plug
- valve
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
- F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
- F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
- F16L37/34—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve is telescoped over an inner cylindrical wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
- F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
- F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
- F16L37/35—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the valves having an axial bore
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7854—In couplings for coaxial conduits, e.g., drill pipe check valves
Definitions
- the present invention is directed to a coupling device, and more particularly, to a coupling device comprising a pressure relief system assisting connection of the coupling device.
- coupling devices have been provided with butterfly valves which can be opened without applying a force against the residual pressure.
- these valves require a complicated mechanism Involving both rotational and straight movements.
- Piston-like valve are preferred from that point of view as they have a relatively simple mechanism, i.e. one or more valves biased against the coupling body by one or more springs in order to prevent leakage.
- opening of these types of valve requires application of a considerable force against the spring and against the residual pressure.
- Said socket comprises a socket body housing a first valve 14 comprising a cylindrical bore and a second valve 22 located and adapted to slide inside said cylindrical bore.
- the socket comprises two chambers, a first chamber, called space 31, comprising the residual pressure of the fluid and a second unsealed chamber 28 at the front end of the socket.
- the plug Upon connection of the plug and the socket, the plug first moves the second valve 22 such that a fluid connection is provided between the two chambers and that the residual pressure is evacuated from the first chamber to the second chamber.
- the second valve is subjected to the residual pressure because of a hole 29 provided in the first valve. Therefore, a large amount of effort is needed to move said first valve before pressure evacuation.
- the second chamber is not sealed and can therefore be subject to any type of contamination.
- the socket can therefore be coupled only with specific plugs which provide sealing at the moment of decompression, i.e. the moment where fluid communication is realized between the two chambers, otherwise leakage may occur.
- US document 5 996 624 describes a quick-coupling device, according to the preamble of claim 1, comprising a pressure relief system made of three different valves, A first valve 31, a second valve 40 and a third valve 50 are positioned along the longitudinal direction of the plug body such that upon connection, a piston of the socket pushes the first valve which in turn pushes the second valve that finally pushes the third valve thus providing fluid connection between a rear chamber and a front chamber of the socket.
- the third valve is subjected to the residual pressure and its displacement therefore requires a large amount of effort.
- an object of the present invention is therefore to provide a simple, preferably quick, coupling device solving the drawbacks mentioned above, and more particularly, capable of being connected without the need of a large amount of effort to evacuate the residual pressure while providing sealing properties during connection in order to prevent contamination of the fluid.
- a first aspect of the invention is directed to a coupling device comprising a first half and a second half adapted to be connected to each other, wherein said first half comprises a body housing a front chamber and a rear chamber separated by a first element and a second element slidably inserted in a bore provided in said first element, wherein said bore forms an inner cavity in fluid communication with the front chamber and communicating with the rear chamber via a first through-hole provided in the first element.
- the coupling device is characterized In that said cavity is sealed from said rear chamber and in that upon connection of the coupling device said second element is longitudinally moved so that a second through-hole provided In said second element comes in fluid communication with said first through-hole thereby providing a fluid communication between the two chambers via said cavity.
- the first half Is a plug and the second half is a socket.
- a residual pressure is evacuated from the rear chamber to the front chamber.
- further connection is easier as the pressure biasing the second element is lower.
- the residual pressure is 350 bar or less.
- the first element is adapted to be moved only once the fluid communication between the two chambers has been realized, Thus, no huge effort is needed since the first element is moved only once the decompression has occurred.
- fluid communication between the two chambers Is realized before fluid communication between the two halves.
- decompression occurs before the connection.
- the second element is biased away from the first element by a first spring.
- first spring a first spring
- the front chamber is in communication with said cavity via an evacuation through-hole provided in the second element and is sealed by the body, the first element and the second element. Therefore, contamination of the device is avoided by having a sealed front chamber.
- the device further comprises a fourth sealing element between the body and the first element.
- a reliable seal is provided between the two chambers.
- the second element is a plug valve comprising a front end in contact with a third sealing element sealing the front end of the first half.
- a plug valve comprising a front end in contact with a third sealing element sealing the front end of the first half.
- the first element is a cylindrical hollow valve support biased against the plug body by a second spring and a residual pressure in the rear chamber.
- a second spring biased against the plug body by a second spring and a residual pressure in the rear chamber.
- the sealing between the cavity and the rear chamber is realized by a first sealing element and a second sealing element.
- the half has a simple structure.
- the first sealing element and the second sealing element are O-rings located in respective grooves on an inner surface of the bore and surrounding said first hole.
- the evacuated residual pressure upon connection, applies an opening force on a piston of the second half.
- the residual pressure assists the connection of the halves.
- FIG. 1 shows a plug according to a preferred embodiment of the present invention.
- the plug 2 comprises a plug body 21 which is to be attached to a hose or similar at its rear end, i.e. the right side of the figure, and to a socket at its front end, i.e. the left side of the figure.
- the plug 2 comprises two chambers A, B which are separated by a residual pressure relief system.
- This residual pressure relief system is made of a valve support 22 comprising a cylindrical bore 222 and a cylindrical plug valve 23 slidably inserted in the cylindrical bore 222 of the valve support 22.
- the bore 222 forms a cavity 4 which is surrounded by the support valve 22 and by the plug valve 23 which are biased by respective springs 92 and 91 such that the plug valve 23 is able to be moved inside the bore 222.
- the valve support 22 is biased by a second spring 92 against the plug body 21, preferably a retaining wall of the plug body 21, with an O-ring 5 provided between them in order to have a reliable sealing of the plug 2 between these two elements so that chambers A and B are sealed with respect to each other.
- the plug valve 23 is biased away from the valve support 22 by a first spring 91 such that upon disconnection, the front end 23' of the plug valve 23 is In contact with a sealing 0-ring 6 provided at the front end of the plug body 21 in order to have a reliable sealing at the front end such that no contamination of the front chamber A may occur.
- This front chamber A is a 0-pressure chamber, i.e. the front chamber is not subjected to the residual pressure of the fluid contained in the hose attached to the right end of the plug. Further, as shown in the figure 1 the walls of front chamber A are made by the plug body 21, the plug valve 23 and the valve support 22.
- the rear chamber B is a pressurized chamber, i.e. the rear chamber comprises the fluid to be transferred and/or stored and that creates a residual pressure against the valve support 22 thereby further biasing the valve support 22 against the plug body 21.
- This residual pressure is therefore sealed in the rear chamber B by the above mentioned O-ring 5 and by two further sealing elements, O-rings 7 and 8, which seal the communication between the cavity 4 and the rear chamber B provided by the through holes 221 and 232 such that in the disconnected state, the residual pressure can not be evacuated by the through-hole 221.
- FIGS 2A-2C represent three steps of the coupling of the plug and the socket of the coupling device of the present invention.
- the position of the valve support 22 remains unchanged such that the plug valve 21 is moved with respect to the valve support 22 while the front chamber A is still sealed by the valve support 22, via O-ring 5, by the plug valve 23 via O-rings 7 and 8, and by the piston 32 via O-ring 6, As well shown, the displacement of the plug valve 23 also moves the second through-hole 232 toward the first through-hole 221, but, at this moment, O-ring 7 is still between them, thus providing a sealing between these holes.
- sealing between the plug 2, the socket 3 and the exterior is also achieved by O-rings 6 and piston 32 such that the residual pressure evacuated from rear chamber B will impinge onto the piston 32 to push it away from the valve 31 and the O-ring 10, thereby assisting in the connection of the coupling device 1.
- Figure 2C representing complete connection of the coupling device, shows the valve support that has been displaced after evacuation of the residual pressure such that the O-ring 5 no longer touches the plug body 21 and the main fluid path which passes all around the plug valve 23 and the valve support 22 from the plug 2 to the socket 3.
- the coupling device 1 is kept in this complete connected state by any kind of conventional locking means such that upon unlocking this state for disconnection, the springs 91 and 92 automatically return the plug valve 23 and the valve support 22 in their original state to restore the disconnected sealed state of the plug 2.
Description
- The present invention is directed to a coupling device, and more particularly, to a coupling device comprising a pressure relief system assisting connection of the coupling device.
- In recent years, various coupling devices have been provided for coupling two fluid storage and/or fluid transport means. Conventional coupling devices are made of two couplings, also called halves, i.e. one plug and one socket. These couplings seal the end of the storage and/transport means, e.g. a hose, to which they are attached in order to prevent leakage. In absence of leakage, the fluid contained in the storage and/or transport means applies a pressure on the couplings. This pressure, also called residual pressure, renders connection of the two couplings very difficult when connection consists in applying a force against said pressure, i.e. pushing a valve in the rear direction of the coupling.
- In order to solve these problems, coupling devices have been provided with butterfly valves which can be opened without applying a force against the residual pressure. However these valves require a complicated mechanism Involving both rotational and straight movements. Piston-like valve are preferred from that point of view as they have a relatively simple mechanism, i.e. one or more valves biased against the coupling body by one or more springs in order to prevent leakage. However, as mentioned above, opening of these types of valve requires application of a considerable force against the spring and against the residual pressure.
- Published European patent application No.
0 265 569 describes a coupling device comprising a pressure relief system in the socket. Said socket comprises a socket body housing a first valve 14 comprising a cylindrical bore and asecond valve 22 located and adapted to slide inside said cylindrical bore. The socket comprises two chambers, a first chamber, calledspace 31, comprising the residual pressure of the fluid and a second unsealed chamber 28 at the front end of the socket. Upon connection of the plug and the socket, the plug first moves thesecond valve 22 such that a fluid connection is provided between the two chambers and that the residual pressure is evacuated from the first chamber to the second chamber. This device however presents several drawbacks, i.e., the second valve is subjected to the residual pressure because of a hole 29 provided in the first valve. Therefore, a large amount of effort is needed to move said first valve before pressure evacuation. Also, the second chamber is not sealed and can therefore be subject to any type of contamination. Finally, as the front end and the second chamber are not sealed, the socket can therefore be coupled only with specific plugs which provide sealing at the moment of decompression, i.e. the moment where fluid communication is realized between the two chambers, otherwise leakage may occur. -
US describes a quick-coupling device, according to the preamble ofdocument 5 996 624claim 1, comprising a pressure relief system made of three different valves, Afirst valve 31, a second valve 40 and a third valve 50 are positioned along the longitudinal direction of the plug body such that upon connection, a piston of the socket pushes the first valve which in turn pushes the second valve that finally pushes the third valve thus providing fluid connection between a rear chamber and a front chamber of the socket. However, in this device the third valve is subjected to the residual pressure and its displacement therefore requires a large amount of effort. - In view of the above, an object of the present invention is therefore to provide a simple, preferably quick, coupling device solving the drawbacks mentioned above, and more particularly, capable of being connected without the need of a large amount of effort to evacuate the residual pressure while providing sealing properties during connection in order to prevent contamination of the fluid.
- The above problems are solved by a coupling device according to the present invention as claimed in
claim 1. - A first aspect of the invention is directed to a coupling device comprising a first half and a second half adapted to be connected to each other, wherein said first half comprises a body housing a front chamber and a rear chamber separated by a first element and a second element slidably inserted in a bore provided in said first element, wherein said bore forms an inner cavity in fluid communication with the front chamber and communicating with the rear chamber via a first through-hole provided in the first element. The coupling device is characterized In that said cavity is sealed from said rear chamber and in that upon connection of the coupling device said second element is longitudinally moved so that a second through-hole provided In said second element comes in fluid communication with said first through-hole thereby providing a fluid communication between the two chambers via said cavity. With this coupling device, connection is much easier since evacuation of the pressure is carried out without moving any element, onto which the residual pressure applies, before decompression. More particularly, the second element is not biased by the residual pressure since the first opening is sealed.
- According to a preferred embodiment of the invention, the first half Is a plug and the second half is a socket.
- According to a further preferred embodiment of the invention, when said fluid communication is realized, a residual pressure is evacuated from the rear chamber to the front chamber. Thus, further connection is easier as the pressure biasing the second element is lower.
- According to a further preferred embodiment of the invention, the residual pressure is 350 bar or less. Thus, a considerable gain of energy can be gained by avoiding applying a huge effort to open a coupling device against this pressure,
- According to a further preferred embodiment of the invention, the first element is adapted to be moved only once the fluid communication between the two chambers has been realized, Thus, no huge effort is needed since the first element is moved only once the decompression has occurred.
- According to a further preferred embodiment of the invention, fluid communication between the two chambers Is realized before fluid communication between the two halves. Thus, decompression occurs before the connection.
- According to a further preferred embodiment of the invention, the second element is biased away from the first element by a first spring. Thus, upon disconnection, the half is maintained sealed.
- According to a further preferred embodiment of the invention, the front chamber is in communication with said cavity via an evacuation through-hole provided in the second element and is sealed by the body, the first element and the second element. Therefore, contamination of the device is avoided by having a sealed front chamber.
- According to a further preferred embodiment of the invention, the device further comprises a fourth sealing element between the body and the first element. Thus, a reliable seal is provided between the two chambers.
- According to a further preferred embodiment of the invention, the second element is a plug valve comprising a front end in contact with a third sealing element sealing the front end of the first half. Thus leakage is avoided at the front end of the half.
- According to a further preferred embodiment of the invention, the first element is a cylindrical hollow valve support biased against the plug body by a second spring and a residual pressure in the rear chamber. Thus, leakage is avoided inside the half.
- According to a further preferred embodiment of the invention, the sealing between the cavity and the rear chamber is realized by a first sealing element and a second sealing element. Thus, the half has a simple structure.
- According to a further preferred embodiment of the invention, the first sealing element and the second sealing element are O-rings located in respective grooves on an inner surface of the bore and surrounding said first hole. Thus, replacement of the sealing element is easy and wear may be avoided.
- According to a further preferred embodiment of the Invention, upon connection, the evacuated residual pressure applies an opening force on a piston of the second half. Thus, upon decompression the residual pressure assists the connection of the halves.
- Further features and advantages of the present invention will be described in the following detailed description of one exemplary embodiment which should not be considered a limitation of the present invention, together with the attached drawings, wherein
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Figure 1 represents a plug according to a preferred embodiment of the present invention. -
Figures 2A to 2C represent four steps of coupling a coupling device of the present invention, -
Figure 1 shows a plug according to a preferred embodiment of the present invention. Theplug 2 comprises aplug body 21 which is to be attached to a hose or similar at its rear end, i.e. the right side of the figure, and to a socket at its front end, i.e. the left side of the figure. - As well shown, the
plug 2 comprises two chambers A, B which are separated by a residual pressure relief system. This residual pressure relief system is made of avalve support 22 comprising acylindrical bore 222 and acylindrical plug valve 23 slidably inserted in thecylindrical bore 222 of thevalve support 22. - The
bore 222 forms acavity 4 which is surrounded by thesupport valve 22 and by theplug valve 23 which are biased byrespective springs 92 and 91 such that theplug valve 23 is able to be moved inside thebore 222. More particularly, thevalve support 22 is biased by asecond spring 92 against theplug body 21, preferably a retaining wall of theplug body 21, with an O-ring 5 provided between them in order to have a reliable sealing of theplug 2 between these two elements so that chambers A and B are sealed with respect to each other. On the other hand, theplug valve 23 is biased away from thevalve support 22 by a first spring 91 such that upon disconnection, the front end 23' of theplug valve 23 is In contact with a sealing 0-ring 6 provided at the front end of theplug body 21 in order to have a reliable sealing at the front end such that no contamination of the front chamber A may occur. This front chamber A is a 0-pressure chamber, i.e. the front chamber is not subjected to the residual pressure of the fluid contained in the hose attached to the right end of the plug. Further, as shown in thefigure 1 the walls of front chamber A are made by theplug body 21, theplug valve 23 and the valve support 22. On the contrary, the rear chamber B is a pressurized chamber, i.e. the rear chamber comprises the fluid to be transferred and/or stored and that creates a residual pressure against thevalve support 22 thereby further biasing thevalve support 22 against theplug body 21. - This residual pressure is therefore sealed in the rear chamber B by the above mentioned O-
ring 5 and by two further sealing elements, O-rings cavity 4 and the rear chamber B provided by the throughholes hole 221. -
Figures 2A-2C represent three steps of the coupling of the plug and the socket of the coupling device of the present invention. - In
Figure 2A , representing the beginning of the connection, theplug valve 23 is moved inside thebore 222, and modify the volume of thecavity 4, rearward in the longitudinal direction by avalve 31 of thesocket 3. At this moment, rear chamber B is sealed and the residual pressure is confined in that rear chamber B such that the only effort needed to move theplug valve 23, which is not subjected to the residual pressure, corresponds to the resistance of the first spring 91. The position of thevalve support 22 remains unchanged such that theplug valve 21 is moved with respect to thevalve support 22 while the front chamber A is still sealed by thevalve support 22, via O-ring 5, by theplug valve 23 via O-rings piston 32 via O-ring 6, As well shown, the displacement of theplug valve 23 also moves the second through-hole 232 toward the first through-hole 221, but, at this moment, O-ring 7 is still between them, thus providing a sealing between these holes. - In
Figure 2B , representing the decompression phase, the movement initiated infigure 2A has been continued and theplug valve 23 has been sufficiently moved such that the second through-hole 232 has passed and is beyond the O-ring 7 such that a fluid communication path has been created between the two through-holes cavity 4 and the rear chamber B via said twoholes cavity 4 via evacuation through-hole 231, the residual pressure can therefore be evacuated from rear chamber B to front chamber A. Therefore, rear chamber B has been depressurized without having to move thevalve support 22 since an evacuation path has been created which passes first from rear chamber B to the cavity via through-holes cavity 4 to the front chamber A via through-hole 231. - Further, at this moment, sealing between the
plug 2, thesocket 3 and the exterior is also achieved by O-rings 6 andpiston 32 such that the residual pressure evacuated from rear chamber B will impinge onto thepiston 32 to push it away from thevalve 31 and the O-ring 10, thereby assisting in the connection of thecoupling device 1. -
Figure 2C , representing complete connection of the coupling device, shows the valve support that has been displaced after evacuation of the residual pressure such that the O-ring 5 no longer touches theplug body 21 and the main fluid path which passes all around theplug valve 23 and thevalve support 22 from theplug 2 to thesocket 3. Thecoupling device 1 is kept in this complete connected state by any kind of conventional locking means such that upon unlocking this state for disconnection, thesprings 91 and 92 automatically return theplug valve 23 and thevalve support 22 in their original state to restore the disconnected sealed state of theplug 2.
Claims (14)
- Coupling device (1) comprising a first half (2) and a second half (3) adapted to be connected to each other, wherein said first half (2) comprises a body (21) housing a front chamber (A) and a rear chamber (B) separated by a first element (22) and a second element (23) slidable inserted in a bore (222) provided in said first element (22), wherein said bore (222) forms an inner cavity (4) in fluid communication with the front chamber (A) and communicating with the rear chamber (B) via a first through-hole (221) provided in the first element(22), characterized in that said cavity (4) is sealed from said rear chamber (B) and in that upon connection of the coupling device(1), said second element (23) is moved such that a second through-hole (232) provided in said second element (23) is in fluid communication with said first through-hole (221) thereby providing a fluid communication between the two chambers (A,B) via said cavity(4).
- Coupling device according to claim 1, wherein the first half (2) is a plug and the second half (3) is a socket.
- Coupling device according to claim 1 or 2, wherein when said fluid communication is realized, the device Is adapted to evacuate a residual pressure from the rear chamber (B) to the front chamber (A).
- Coupling device according to claim 3, wherein the residual pressure is 350 bar or less.
- Coupling device according to any one of claims 1 to 4, wherein the first element (22) is adapted to be moved only once the fluid communication between the two chambers (A, B) has been realized.
- Coupling device according to any one of claims 1 to 5, wherein fluid communication between the two chambers (A, B) is realized before fluid communication between the two halves (2, 3).
- Coupling device according to any one of claims 1 to 6, wherein the second element (23) is biased away from the first element (22) by a first spring (91).
- Coupling device according to any one of claims 1 to 7, wherein the front chamber (A) is in communication with said cavity (4) via an evacuation through-hole (231) provided In the second element (23) and is sealed by the body (21), the first element (22) and the second element (23).
- Coupling device according to any one of claims 1 to 8,
wherein the sealing between the cavity (4) and the rear chamber (B) is realized by a first sealing element (7) and a second sealing element (8). - Coupling device according to claim 9, wherein the first sealing element (7) and the second sealing element (8) are O-rings located in respective grooves on an inner surface of the bore (222) and surround said first hole (221).
- Coupling device according to claim 9, wherein the second element (23) is a plug valve comprising a front end (23') in contact with a third sealing element (6) sealing the front end of the first half (2).
- Coupling device according to claim 11 further comprising a fourth sealing element (5) between the body (21) and the first element (22)
- Coupling device according to any one of claims 1 to 12 wherein the first element (22) is a cylindrical hollow valve support biased against the plug body (21) by a second spring (92) and a residual pressure in the rear chamber (B).
- Coupling device according to any one of claims 3 to 13, wherein upon connection, the evacuated residual pressure applies an opening force on a piston (32) of the second half (3).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120290046 EP2626612B1 (en) | 2012-02-08 | 2012-02-08 | Coupling device with residual pressure relief system |
PCT/EP2013/051614 WO2013117453A1 (en) | 2012-02-08 | 2013-01-29 | Coupling device with residual pressure relief system |
CA2864190A CA2864190C (en) | 2012-02-08 | 2013-01-29 | Coupling device with residual pressure relief system |
US14/377,187 US9395026B2 (en) | 2012-02-08 | 2013-01-29 | Coupling device with residual pressure relief system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120290046 EP2626612B1 (en) | 2012-02-08 | 2012-02-08 | Coupling device with residual pressure relief system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2626612A1 EP2626612A1 (en) | 2013-08-14 |
EP2626612B1 true EP2626612B1 (en) | 2014-12-10 |
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ID=47603801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20120290046 Active EP2626612B1 (en) | 2012-02-08 | 2012-02-08 | Coupling device with residual pressure relief system |
Country Status (4)
Country | Link |
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US (1) | US9395026B2 (en) |
EP (1) | EP2626612B1 (en) |
CA (1) | CA2864190C (en) |
WO (1) | WO2013117453A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20150642A1 (en) * | 2015-05-07 | 2016-11-07 | Alfa Gomma S P A | FEMALE QUICK COUPLING UNDER PRESSURE |
GB2559208A (en) | 2017-01-27 | 2018-08-01 | Eaton Sas | Flat face male hydraulic coupling |
GB2577345A (en) * | 2018-09-21 | 2020-03-25 | Eaton Intelligent Power Ltd | Female hydraulic coupling, male hydraulic coupling and combination thereof |
SE542883C2 (en) * | 2018-09-21 | 2020-08-04 | Mann Teknik Ab | Pressure tight plug comprising a pressure relief channel |
US11635162B2 (en) * | 2020-06-12 | 2023-04-25 | Colder Products Company | Fluid couplings |
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SE440138B (en) * | 1982-07-27 | 1985-07-15 | Karl Ove Nyberg | Pneumatic |
SE454722B (en) | 1986-10-22 | 1988-05-24 | Stromdahl Leif | DEVICE FOR CONNECTION FOR CONNECTING WIRELESS PIPES WITH INSERT RESP RECEPTION NIPPLE |
DE3662815D1 (en) | 1986-10-27 | 1989-05-18 | Parker Hannifin Rak Sa | Coupling provided with decompression relief valves |
SE468403B (en) | 1990-01-17 | 1993-01-11 | Dart Engineering Ag | DEVICE FOR CLUTCH PART THAT INCLUDES PRESSURE REDUCING BODY |
CN1057590C (en) * | 1995-01-06 | 2000-10-18 | 考尔得产品公司 | Low spill high flow quick coupling valve assembly |
SE510095C2 (en) | 1996-02-23 | 1999-04-19 | Dart Engineering Ag | Device for quick coupling |
DE19624365C1 (en) | 1996-06-19 | 1997-10-23 | Voswinkel Gmbh | Two part pressure coupling |
IT1286038B1 (en) | 1996-10-25 | 1998-07-07 | Stucchi Srl | QUICK COUPLING FITTING FOR PIPES WITH SAFETY VALVE AND PRESSURE RELEASE VALVE |
KR100372461B1 (en) * | 1997-01-23 | 2003-02-17 | 교세키 산교 가부시키가이샤 | Self-seal type double-pipe joint |
IT1289947B1 (en) | 1997-02-21 | 1998-10-19 | Faster Srl | QUICK COUPLING |
IT1296815B1 (en) | 1997-11-28 | 1999-08-02 | Omba S R L | QUICK CONNECTION MALE CONNECTED UNDER PRESSURE |
US6145539A (en) * | 1999-04-12 | 2000-11-14 | Snap-Tite Technologies, Inc. | Balanced coupling with pressure bleed |
US6382251B1 (en) * | 2000-03-29 | 2002-05-07 | Snap-Tite Technologies, Inc. | Coupling with male half having internal pressure relief |
ITMI20011105A1 (en) | 2001-05-25 | 2002-11-25 | Faster Srl | QUICK COUPLING WITH A FLAT FACE, WITH MEANS TO AVOID A LOSS OF HYDRAULIC FLUID DURING THE COUPLING OR DISCONNECTION PHASE |
US6866064B2 (en) * | 2002-11-29 | 2005-03-15 | Eaton Corporation | Coupling assembly having a coupling member removably securable in an apparatus |
DE102007008143B4 (en) * | 2006-03-02 | 2015-01-29 | Voswinkel Entwicklungs- Und Verwaltungs-Gmbh & Co. Kg | Coupling part of a hydraulic plug-in coupling |
-
2012
- 2012-02-08 EP EP20120290046 patent/EP2626612B1/en active Active
-
2013
- 2013-01-29 CA CA2864190A patent/CA2864190C/en active Active
- 2013-01-29 US US14/377,187 patent/US9395026B2/en active Active
- 2013-01-29 WO PCT/EP2013/051614 patent/WO2013117453A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CA2864190C (en) | 2019-06-04 |
US20150000770A1 (en) | 2015-01-01 |
CA2864190A1 (en) | 2013-08-15 |
WO2013117453A1 (en) | 2013-08-15 |
EP2626612A1 (en) | 2013-08-14 |
US9395026B2 (en) | 2016-07-19 |
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